I did a vw diagnose and was told it's the water pump, but my mechanic says its the turbo unit. I change the water pump and timing belt but no luck. Pls what could be wrong
2006-10-13 13:31:39 · 21 answers · asked by ahmed a 1 in Cars & Transportation ➔ Maintenance & Repairs
Blue smoke usually is caused by oil getting through the engine into the exhaust. I suggest you check the oil to be certain it is not low and add some if it is. You might have nothing worse than a positive crankcase ventilating valve that needs to be replaced. That can cause oil excessive oil vapors to be pulled from the crankcase and burned in the engine.
Otherwise you should do or have done a complete compression test to be certain the oil is not getting past the rings. A reputable shop will know how to do that and they should be able to tell if the trouble is a simple headgasket job.
2006-10-13 13:55:33 · answer #1 · answered by Anonymous · 0⤊ 0⤋
I've heard some old bollocks in my time, but a water pump causing blue smoke?? What a complete load of sh*it.
The engine or turbo is knackered, and it's burning oil. Get a wet/dry compression test done on the engine, and check the results. If it doesn't show excessive top-end or bore-wear, then the turbo is rogered. It's probably a combination of a tired engine and tired turbo.
It would be interesting to know if this engine is petrol or diesel too, how many miles it has done, and what sort of service history it has.... if any.
2006-10-13 20:51:42 · answer #2 · answered by Phish 5 · 0⤊ 0⤋
Blue smoke = burning oil.
Usual causes are worn valve stem seals or knackered piston rings allowing oil into the cylinder to be burnt with the fuel. As you mention yours is a turbo, it is most likely that the turbo is shot - your mechanic tells the truth! (a rare breed!)
This depends on the mileage and how much you drive like a loony with your foot down, but 60-80,000 miles is a reasonable estimate for a turbo rebuild.
2006-10-13 20:35:51 · answer #3 · answered by cm_carey 3 · 1⤊ 0⤋
It's most probably the turbo seals, if you do a compression test this will be a good indication the engine isn't blowing oil. Also look around the turbo itself, when they get to the end of their life the gaskets go as well allowing oil to escape.
2006-10-13 20:55:27 · answer #4 · answered by Lottoextra 1 · 0⤊ 0⤋
blue smoke = oil burning...turbo most likely bad...if not the turbo then engine is smoked. The turbo runs oil through it in order to cool it...if the seals are bad the it will through oil out the exhaust ...hence the blue oil...if the turbo isn't bad then the engine is bad....sorry either is not good.
2006-10-13 20:36:58 · answer #5 · answered by Kenneth S 5 · 0⤊ 0⤋
Blue smoke is an indicator of burning oil. have a compression test and a leakdown test down on the motor. this will tell you if the valve seals are worn. Do you have high miles on the car?
good luck
2006-10-13 20:37:54 · answer #6 · answered by mailbox1024 7 · 0⤊ 0⤋
Blue Smoke = Burning Oil
So possibly a seal has gone, How old is the car?
Is there a mayonnaise sort of colour in the radiator cap thing?
2006-10-13 20:44:23 · answer #7 · answered by Alex 5 · 0⤊ 0⤋
Go with your mechanic. Turbos are lubricated by engine oil, and if any seals are bad in the turbo unit, oil will end up in your exhaust.
2006-10-13 20:47:22 · answer #8 · answered by Lab 7 · 0⤊ 0⤋
sounds like your burning oil
try an oil stop leak product if the smoke lessens then your looking at rings or valves..you didn't say if you have a loss of power or knocking?
also I once had an old wreak that smell strongly of gas and liked to flood out when it got hot. that turned out to be from a bad vacuum line...but that made Small puffs of blue smoke when cold
2006-10-13 20:42:44 · answer #9 · answered by BigBadWolf 6 · 0⤊ 0⤋
Sounds like an oil leak to me. Check under the car.
2006-10-13 20:33:03 · answer #10 · answered by Scooter 4 · 0⤊ 0⤋